多元纳米相固态合金化机理研究  

Investigation of the Mult Elemental Nanocrystalline System in Mechanical Alloying by Mossbauer Spectroscopy

作　　者：任山[1,2] 张进修[1,2] 高乃飞 

机构地区：[1]中山大学物理学系 [2]清华大学物理学系

出　　处：《中山大学学报（自然科学版）》1997年第5期40-43,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：广东省博士后科学研究基金广东省博士后科学研究基金

摘　　要：应用ＸＲＤ，ＴＥＭ，Ｍｏｓｓｂａｕｅｒ谱等实验手段研究了ＴｉＦｅＮｉ元素混合粉在机械合金化过程中的固态合金化机理．测试了不同合金化时间的Ｍｏｓｓｂａｕｅｒ谱．结果表明，由于Ｎｉ元素的加入，ＴｉＦｅＮｉ的合金化过程与ＴｉＦｅ二元系中只有Ｆｅ扩散到Ｔｉ点阵中的合金化机理不同，出现了多种Ｆｅ原子过渡状态，这些过渡状态主要是Ｎｉ及Ｔｉ原子扩散到Ｆｅ点阵中形成的固溶体结构．在合金化过程完成后，最终形成Ｂ２结构的纳米晶相．The solid state reaction of the elemental blends of Ti, Fe, Ni powders during mechanical alloying was investigated by the means of XRD, TEM and Mssbauer spectroscopy. The Mssbauer spectrums were recorded after various milling times. The results show that the mechanism of solid state reaction in TiFeNi alloy is different with that of TiFe binary system. Here several transient states of Fe atoms are presented during solid state reaction, Ni and Ti atoms diffused into the lattice of Fe and formed different states. The nanophase with B 2 structure was synthesized after the solid state reaction.

关 键 词：固态合金化 TiFeNi 储氢合金 纳米相 

分 类 号：TG139.7[一般工业技术—材料科学与工程]